Table 3.

Marginal Effects of Respondent Characteristics on Participation

Variable	Marginal Effect	Standard Error	z	P>|z|	95% Confidence Interval
Distance from residence to coast (mi.)	−0.005	0.001	−3.52	0.000	−0.008	−0.002
Household size	0.017	0.015	1.10	0.270	−0.013	0.047
Age	−0.005	0.001	−4.80	0.000	−0.007	−0.003
Female	−0.004	0.030	−0.12	0.906	−0.063	0.056
Non-White	−0.425	0.071	−6.02	0.000	−0.563	−0.287
4-Year college or graduate degree	0.152	0.035	4.370	0.000	0.084	0.221
Household income $100,000 or higher	0.090	0.033	2.77	0.006	0.026	0.154

Note: Marginal effects are calculated with other variables at their mean levels (see Table A-6 for summary statistics). Marginal effects for binary (dummy variables) are for the discrete change from the base level.